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<body><span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - VS2012 preprocessor string concatenation incompatibility"
href="http://llvm.org/bugs/show_bug.cgi?id=18822">bug 18822</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>rnk@google.com
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>WORKSFORME
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - VS2012 preprocessor string concatenation incompatibility"
href="http://llvm.org/bugs/show_bug.cgi?id=18822#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WORKSFORME - VS2012 preprocessor string concatenation incompatibility"
href="http://llvm.org/bugs/show_bug.cgi?id=18822">bug 18822</a>
from <span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span></b>
<pre>We already have an compatibility for hack for this, added in r108624:
Add another terrible VC++ compatibility hack: allow users to
allow invalid token pastes (when in -fms-extensions mode)
with -Wno-invalid-token-paste
It added this diagnostic:
--- a/include/clang/Basic/DiagnosticLexKinds.td
+++ b/include/clang/Basic/DiagnosticLexKinds.td
@@ -277,6 +277,9 @@ def err_too_few_args_in_macro_invoc : Error<
"too few arguments provided to function-like macro invocation">;
def err_pp_bad_paste : Error<
"pasting formed '%0', an invalid preprocessing token">;
+def err_pp_bad_paste_ms : Warning<
+ "pasting formed '%0', an invalid preprocessing token">, DefaultError,
+ InGroup<DiagGroup<"invalid-token-paste">>;
So, this is a warning that's sort of also an error. You can suppress it with
-Wno-invalid-token-paste, but a much better way to do it is to use -isystem to
provide paths to system headers like windows.h, in which case clang will
suppress all warnings in those files by default.</pre>
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